/*
 * Copyright (c) 2021, LiWangQian<liwangqian@huawei.com> All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this list of
 *    conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
 *    of conditions and the following disclaimer in the documentation and/or other materials
 *    provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
 *    to endorse or promote products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "allocator.h"
#include <stdlib.h>

#ifdef __cplusplus
extern "C" {
#endif

static inline
void *DefaultAcquire(size_t memSize, void *ctx)
{
    return malloc(memSize);
}

static inline
void DefaultRelease(void **memPtr, void *ctx)
{
    if (memPtr == NULL || *memPtr == NULL) {
        return;
    }
    free(*memPtr);
    *memPtr = NULL;
}

static inline
bool DefaultConstructor(void *memPtr, void *ctx)
{
    return true;
}

static inline
void Defaultdestructor(void *memPtr, void *ctx)
{
    return;
}

static const Allocator defaultAllocator = {
    .acquire = DefaultAcquire,
    .release = DefaultRelease,
    .ctor    = DefaultConstructor,
    .dtor    = Defaultdestructor,
    .ctx     = NULL
};

const Allocator *GetDefaultAllocator()
{
    return &defaultAllocator;
}

#ifdef __cplusplus
}
#endif
